Ford Mustang (1999-2004) Service Manual: Transmission Description (Description and Operation)

The 4R70W has the following features:

  • Wide ratio gears
  • Four speeds
  • Rear wheel drive
  • Automatic
  • Electronic shift
  • Torque converter clutch control
  • Line pressure controls

The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.

4R70W Automatic Transmission

4R70W Automatic Transmission

    Automatic Transaxle/Transmission
    General Specifications a - MERCON V is not interchangeable at this time with the current MERCON fluids. Check the transmission fluid level indicator to determine the correct fluid and refer to the ...

    Identification Tags
    All vehicles are equipped with a Vehicle Certification Label, located on the driver side door lock post. For correct transmission identification, refer to the code in the space marked TR. ...

    Other materials:

    Diagnostics
    Special Tool(s) Transmission Fluid Pressure Gauge 307-004 (T57L-77820-A) Air Test Plate, Transmission 307-246 (T92P-7006-A) Alignment Gauge, TR Sensor 307-351 (T97L-70010-A) Breakout Box, EEC-V Control S ...

    Idle Air Control (IAC) Valve - Cobra
    Removal and Installation 1. Disconnect the idle air control (IAC) valve electrical connector. 2. Remove the bolts, the IAC valve and the gasket. 3. NOTE: Install a new gasket if necessary. To install, reverse the removal procedure. ...

    Installation
    1. Install the bearing, snap ring, hub and dust shield. For additional information, refer to Wheel Hub-Cobra in this section. 2. Install the knuckle. 1. Position the knuckle on the lower suspension arm and bushing. 2. Install a new bolt and a new nut. Do ...